JPH02285700A - Component mounting device - Google Patents

Abstract

PURPOSE:To make it possible to use effectively components without disposing even when the component is supplied in a wrong direction by a method wherein a component mounting device is provided with a control means, by which the mark of each component is recognized through a see-through suction nozzle and when the recognized direction of a component is not the prescribed direction, the component is remounted in the proper direction. CONSTITUTION:A suction nozzle 11 is made to position over a component supply cassette 40 in opposition to the cassette 40, a mark 42 and a form of an electronic component P put at a suction position are recognized by a recognition camera 35 through the nozzle 11 consisting of a light-transmitting material and a light-transmitting plate 15 and the supplied direction of the component is discriminated. Then, an elevating member 34 is made to descend, the component P is sucked by the nozzle 11 and the elevating member 34 is again made to ascend. After that, in case the component is supplied in a wrong direction, a pulley 31 is rotatingly driven and the wrong direction is corrected in a prescribed direction. After that, the sucked component P is made to position over a prescribed installation position on a circuit board, the amounts of eccentricity of the component in X- and Y-directions and the angle theta of inclination to the installation posture of the component P are detected by the camera 35 and after a correction of the amounts of eccentricity and the angle theta of inclination, the component P is accurately remounted in the prescribed position on the circuit board.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a component mounting device used for sucking electronic components and mounting them on a circuit board, and in particular, to a component mounting device that is equipped with a suction nozzle that allows the picked-up components to be seen through. The present invention relates to a component mounting device.

2. Description of the Related Art Conventionally, when mounting electronic components on a circuit board, as shown in FIG. The electronic component P is moved to the recognition position and the position of the picked-up electronic component P is detected by the recognition camera 53. Thereafter, the suction nozzle 51 is moved to a position opposite to the component mounting position on the circuit board B, and the positional deviation of the electronic component P is corrected. and mounted it in a predetermined position on circuit board B.

In the above mounting method, after the electronic component P is sucked by the suction nozzle 51, the suction nozzle 51 is accurately positioned at the recognition position while moving toward the circuit board B, and the position of the electronic component P with respect to the suction nozzle 51 is recognized. Since the suction nozzle 51 is moved again after the suction nozzle 51 is removed, it takes a long time for one component mounting operation, and the efficiency of the component equipment is poor. We have proposed an electronic component mounting device that uses a nozzle and is equipped with recognition means for recognizing the position, shape, etc. of the electronic component picked up by the suction nozzle.

Problems to be Solved by the Invention As mentioned above, it is possible to recognize electronic components that have been sucked through a transparent suction nozzle.7. To mount the sucked electronic components as they are without stopping the suction nozzle at the recognition position and positioning it. It can be transported to the location and installed.
We were able to improve mounting efficiency.

However, conventionally, if an electronic component is supplied in the wrong direction at the component supply section, the problem has been that it may be mounted as is, or a separate component confirmation process may be required.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a component mounting device that can be used effectively without being discarded even when a component is supplied in the wrong direction.

Means for Solving the Problems In order to achieve the above object, the present invention provides a parts supply unit that supplies parts marked by type, a suction nozzle that can see through the suctioned parts, and a parts supply unit that supplies parts marked by type. a recognition means for recognizing the type of each component through a suction nozzle; a storage means for storing the type of each component in the component supply section; and a direction of the component determined by recognizing the mark of each component by the recognition means is not a predetermined direction. It is characterized in that it is equipped with a control means that sometimes makes direction corrections.

According to the present invention, when mounting a component, if the specified component is recognized through the suction nozzle and the direction is different from the predetermined direction, the direction of the component is corrected and installed. It will not be discarded and wasted.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 5.

In Fig. 3, reference numeral 1 denotes a main body frame, on the top of which a pair of left and right Y-axis tables 2a, 2b are arranged.
An axis table 3 is installed movably in the X direction, a Z axis table 4- is installed along the X axis table 3 so as to be movable in the X direction, and a mounting head having a suction nozzle 11 is mounted on the Z axis table 4. (not shown, see Figure 4) is 2
It is built in so that it can be moved in any direction. Also, main body frame 1
On the front part of the upper surface of the
A transport positioning means 5 is disposed, and a component supply section 6 is disposed at the rear, and a suction nozzle 11 moves between the suction position of the component supply section 6 and an arbitrary position on which the electronic component P on the circuit board B is to be mounted. configured to move between locations.

In FIG. 4, a suction nozzle 11 made of a transparent material is held in a nozzle holder 12. When the nozzle holder 12 is fitted to the lower end of the suction tube 3, it is locked with an elastic locking device 14 so that it can be replaced with one touch depending on the size of the electronic component P to be sucked. ing. Suction tube 13
The upper end portion of the suction chamber 16 is blocked by a light-transmitting plate 15 to define a suction chamber 16, and a plurality of suction openings 17 are formed at appropriate intervals in the circumferential direction on the peripheral side wall of the suction chamber 16. 18 is transparent plate 1
5 fixing nut.

The upper end of the suction cylinder 13 is fitted into the lower end of the rotating cylinder 20, and is locked with an elastic locking member 19 so that it can be easily replaced when the inside of the suction chamber 16 becomes dirty. Rotating tube 2
0 is bearings 21a and 2 arranged on the outer periphery of the upper and lower parts.
It is rotatably supported by a support cylinder part 23 provided on the movable body 22 via 1b.

A suction outer cylinder 24 - provided on the movable body 22 is fitted onto the outer periphery of the suction cylinder 13 . An annular groove 25 is formed on the inner periphery of the suction cylinder 24 facing the suction opening 17, and a suction port 26 to which a suction means (not shown) is connected to the annular groove 25.
is opened. In addition, a suction opening 17 on the outer periphery of the suction cylinder 13
O-rings 27a and 27b for sealing are arranged on both sides of.

The suction cylinder 13 is placed close to the surface of the transparent plate 15 on the suction chamber 16 side.
A plurality of through holes 28 are formed at appropriate intervals in the circumferential direction,
The suction outer cylinder 24 has two air blowing ports on one side facing these through holes 28, and an air suction port 3 on the other side.
0 is formed, and is configured to form an air curtain along the surface of the transparent plate 15.

A pulley 3 is fixed to two ends of the rotary cylinder 20, and is rotationally driven by a drive source (not shown). In addition, the movable body 22
is movable up and down over a suitable range along a guide 32 provided on an elevating body 34 that is driven up and down along the Z-axis table 4, and is elastically supported by a spring 33.

Reference numeral 35 denotes recognition means such as a CCD camera disposed above the rotating barrel 20 in a state of the same axis, and the optical system lens barrel 36
A half mirror 37 is disposed at the bottom of the suction nozzle 11, and is configured to irradiate illumination light from a lighting fixture 38 disposed on the side toward the suction nozzle 11.

As shown in FIG. 1, the component supply section 6 is equipped with an electronic component assembly 41 configured by housing a large number of electronic components P in a tape-like body in a row, and this electronic component assembly 41
A plurality of component supply cassettes 40 are arranged in parallel, and are configured to feed the electronic components P one pitch at a time toward the suction position at the arrangement pitch of the electronic components P. Further, the electronic components P housed in each electronic component assembly 41 are of the same type, and each electronic component P is marked with a mark 42 indicating the type.

The mark 42 may be a symbol that can be easily binarized such as a bar code 42a or a dot code 42b, a character 42c, or a combination 4 of characters and various symbols, as shown in FIGS.
Any type of mark can be used, such as 2d.

Further, as shown in FIG. 5, the suction nozzle 11 is connected to the control means 4
Y-axis, X-axis, Z-axis tables 2a, 2b controlled by 3
, 3.4, and the control means 43 includes an input means 45 and a recognition means 3.
A signal is input from 5. Connected to the control means 43 is a component data storage means 46 that stores the arrangement state of one electronic component in the component supply section 6 .

Next, the operation will be explained. Prior to mounting the electronic component P, data regarding the placement state of the component in the component supply section 6 is input to the component data storage means 46. Input means 45
When a parts data input command is issued to the control means 43,
The suction nozzle 11 moves to the component suction position of the first component supply cassette 40 as shown in FIG.
At step 5, the mark 42 on the electronic component P is read to determine the type of the electronic component P and stored in the component data storage means 46. Next, as shown by the imaginary line in FIG. 1, the suction nozzle 11 moves to the component suction position of the next component supply cassette 40, reads the mark 42 of the electronic component P in the same way as above, and selects the electronic component P. Determine the type and parts data storage means 4
6 to be memorized. Next, the final parts supply cassette 40
If the component supply cassette 40 is not the final component supply cassette 40, the above operation is repeated until the final component supply cassette 40 is reached.
The type of electronic component P is memorized.

Next, the mounting operation of the electronic component P will be explained. The control means 43 reads out the placement position of the component supply cassette 40 in which an arbitrary type of electronic component P to be mounted is stored from the component data storage means 46, and the drive means 44 reads out the placement position of the component supply cassette 40 that accommodates an arbitrary type of electronic component P to be mounted, and the drive means 44 reads out the placement position of the component supply cassette 40 in which an arbitrary type of electronic component P to be mounted is stored.
is positioned opposite to above the suction position of the designated component supply cassette 40, and the recognition camera 35 recognizes the mark 42 and shape of the electronic component P at the suction position through the suction nozzle 11 made of a transparent material and the transparent plate 15. and determine the direction in which the parts are being fed. Next, the elevating body 34 descends and picks up the electronic component P with the suction nozzle 11, and after rising again, if the component is being fed in the wrong direction, it rotates the pulley 31 to correct it in the predetermined direction. do. After that, the X-axis table 3 and the Y-axis tables 2a and 2b operate to remove the suction nozzle 1.
The electronic component P picked up in step 1 is positioned above the predetermined mounting position of the circuit board B. At this time, the electronic component P
The position of is accurately recognized by the recognition camera 35, the amount of eccentricity in the X direction and the Y direction, and the tilt angle θ with respect to the mounting posture of the electronic component P are detected. This is performed by correcting the amount of movement and rotating the pulley 31. Thereafter, the elevating body 34 descends, and the electronic component P is accurately mounted at a predetermined position on the circuit board B.

By repeating the above operations, appropriate electronic components P are sequentially and efficiently mounted at the electronic component mounting positions on the circuit board B.

Effects of the Invention According to the present invention, when a part is being mounted, if a recognized part is being fed in the wrong direction, it is possible to correct the direction and then mount it. The effect is great for functional and high value-added parts, etc.
A great effect can be obtained.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a perspective view explaining the operation when inputting component data, and FIG. 2 a-
d is a plan view showing an example of a mark attached to a component, FIG. 3 is a schematic perspective view of the entire component mounting device, FIG. 4 is a longitudinal sectional front view of the mounting head section, and FIG. 5 is a block diagram of the control section. FIG. 6 is a perspective view showing a conventional mounting operation. 6... Parts supply unit, 1]... Suction nozzle, 35... Recognition means, 40... Parts supply cassette, 42... Mark, 43...
...control means, 46...parts data storage means,
P...Electronic parts. Book number

Claims (1)

[Claims] a parts supply unit that supplies parts marked by type, and a suction nozzle that can see through the suctioned parts;
recognition means for recognizing the component through the suction nozzle; storage means for storing the type of each component in the component supply section;
A component mounting device characterized by comprising a control means for correcting the direction of the component when the direction of the component determined by recognizing the mark of each component by the recognition means is not a predetermined direction.